Type-writing machine



L. P. mss.

TYPE WRITING MACHINE.

AP PLICAT|ON FILED MAR. l. 19H.

1,322,676. Patented NOV. 25, 1919. I

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lL. P. DISS.

TYPE wnlms MACHINE.

APPLICATION FILED MAR. I. IBI?- 1,322,676. Patented Nov. 25, 1919; y

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BMW-m L. P. DISS.

TYPE WRITING MACHINE.

APPLICATION FILED MAR. I. IQII.

.1,322,67 6.. PaIenIedNov. 25, 1919;

3 SHEETS-SHEET 3.

ATTORNEYS provide improvements LOUIS P. DISS, OF ILION, NEW YORK.

i TYPE-WRITING MACHINE.

To all whom t may concern:

Be it known that I, LOUIS P. Diss, of Ilion, in the county of Herkimerand State of New York, have invented certain new and useful Improvementsin Type-Writing Machines; and I do hereby declare that the following isa full, clear, and exactdescription thereof, which will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, vand to thereference-numerals marked thereon, which form part of thisspecification.

My present invention relates to typewrit` ing machines. f -v The objectof my invention is to provide means whereby better alineinent, betterspacing and better type impressions will be effected and greater speedattainable.

`A further'purpose of my invention is to provide an improved forni oftype bar and typebar mounting andconnections and fure thermore toprovide a novel and improved combination thereof with the escapeinentmechanism. y

Another purpose of this invention is to in the vescapement mechanism andthe connection thereof with the rest of the typewriting machine.

It is well known that the large number of type bars contained in thesegment of a front-strike typewriting machine ynecessitates the pivotsof the type bars being short as compared with the length of the typebars themselves so that the slightest looseness of the'type bar pivotsin their bearings will effect a magnified deviation from alinement andcause irregularity in spacing. One purpose ofmy invention is toeliminate this deviation. and` irregularity by .providing springpressure against the type bars where- Abythe pivots will be forcedagainst one side of their bearings instead of being Lfree to takevarious bearings which the looseness wouldl otherwise permit.Furthermore I provide novel and improved means for effecting thispurpose.

Further purposesand advantages of iny invention will appearffronithespecification `to what is and claims herein.

I Ahave shown my improvements applied known as a No. 10 Remingtontypewriting machine, but it will be obvious thatgmy invention is notlimitedin its appliupon the forwardly Specification of Letters19a-tent.V Patented NOV, 25, i919, Appiication inea March 1,1917. seriaiNo. 151,836. l l

cation to that machine, but may obviously be applied to, many othermachines.

Figure 1 is a. vertical sectional view through the material parts of atypewriting machine embodying one form of my invention,v

Fig. Y andthe auxiliary universal bar.

Fig. 3 is n segment and adjacent parts of a typewriter embodyingvanother form ofmy invention.

Fig. t is a side view of an escapement de- 2 is a rear elevation of thesegment a vertical. sectional view of the y vice embodying one featureof my invention.

Fig. 5 is a rear elevation of a part of a segment as shown in Fig. 3 andof an escapement dev ice asshown yin Figli.

Fig. 6 is an edge view on an enlarged scale of the pivoting end of atype bar.

Figs. 7 arid 8 are edge and side viewsirespectively on asimilarlyenlarged scale of a itype bar hanger embodying one feature ofmyinventioini Y i .Figa .9 is a perspective viewV of the holdingzdog ofthe escapement devicef'and Fig.

bar hangers arrangedin the usual radial fashion upon the front face of asegment n19 of form usual to front-strike typewriting p machines. Thetype bars `are pivotally mounted in their respective. type bar hangersby means of oppositey disposedA outwardly extending short pivots 20 nearone end' of each type bar being mounted in bearings 21 extending wingsof the type Vbar hanger in necting rods 22 operatively connecting theheel of the type bars to the key levers 22a operates to raise the typebars from subthe way well known in .i they art so that a forward pullupon the Vconstantiallyahorizontal position to upright or printingposition'against theplaten 63.

On account ofthe number of type bars which must be mounted -upon thelimited surface: of the segment of the usual frontstrike typewriter thepivots upon each .type

bar must be very short relative to the length of thetype bar., As' thetype bar must vmove very freely in its bearings it is obvious that therewill be some looseness of the type/bar pivotsin thebearings and thatthis looseness will be as it were multiplied onmagniiied Y vin thelength ofthe type bar Vresulting ina 'considerable lateral l deviationof the type upon the typerbar betingpossible:according r'10 to whetherthe type barhas. swungvto one sideor the other in its bearings as it wasf making its main upward movement to print;

ing position. I havefo'vereome'this trouble by providing means wherebylthe type bar is f .pressed toone side of its bearings particularly asfityapproaches printing position.

As means for exerting this pressure I l provide pins 281slidin'glymounted'v inffthe segment i9 preferably as by being mounted in bushings2 4 which in turn are fixed in the segment, said pinsv beingspring-tensionedlto movey to` forward position and being so 'arrangedVthat their forward ends project out from their mountings andyieldinglyengage shoulders v25 upon the type bars l5 and` 16 as saidtype bars approach upright or yprinting position. The spring tensionfrom said f pins it will be-obviousis netsufiicientto preventthe-type'bars from comingto full printing positioinsbut is suiiicientespecially in view 'of its being exerted close v to the pivots y20 tocause the pivots '20 of the said type bars to be pressed-to one sidejoftheir-bearings as the type bars approach printing position. It willbeseen that-this pressing of 1 pressure on the type bars relativerto thepothat the type bar pivots 20 v sition -of the type yand platen. As thetype bars l5 and 16 and type bar-hangers 17 and 18and pins 2 3Yare-arranged, it will vbe seen are pressed-to the forward sideof theirbearings 2l as they approach printin'gposition.k It is not essential:that the type barsv be pressed to the front of their bearings'as theymay obvir -ously be pressed inv any given direction as 'long as thearrangement of parts is such that the several type barsare alwayssubjectedtofpressure in the? same direction as they lapproach printingposition. The 'ar- 7 rangement ofy 'parts shown, however, Vis alpreferred'fform upon a machine of the class :illustrated as it'getsthe-desired resultwith a minimum of :additional parts andfwit-hout.

changing the usual arrangement kof Vparts upon the typewritmg., machine.and also because the pull of the connecting rods 22 'Y tends to ypull,the pivots forward in their bearings.`

In order to have the pressing of the type bar pivotsto one side ofrtheir bearings be most effective and most uniform, I prefer to have'theside of the bearings to which the type barpivots Vare pressed V-shapedor crotch-shaped as they will assist the spring pressure to most readilyand most uniformly bring the type bar to uniform position as itapproaches printing position.

Itis obvious that variousmeans may be used to exert the necessaryYYYspring pressure Y upon the heads of thepins 23. One simple method ofaccomplishing this is shown in Figs. V3v and 5 'ofthe'drawings whereinresilient Vtongues `27 extend inward vclose to the back surface ofthesegment 19,V said tongues vbeing held in place relative to the segmentat their outer Yend by convenient Y means as by being formedas part of asingle band 28 curved to iit'and securely aiiixed to the outer peripheryofthe segmentV 19 as by screws 29. Y

Another form Vof providing the necessary forward spring' tension forjthepins 23 is shown in Figs. l and Y2 particularly and consistsinV havingan auxiliary universal bar e30 segment-shaped in outline asfclearlyindi-VV catedV in Fig. A'2-andv ofQsuchsize 'and so placed at the backof the segment 19 as -to cover the heads 26 of 'allof the Apins 23. Thisauxiliary universal bar .30 is. held'by spring tension against the headsof the said i Y pins, but is adapted to yield and move rearwardly inaparallel direction as any yof the type bars are moved-to printingposition and the rearward movement impartedto it bya lpin 23 against thespringtension of the auxiliary universal bar 30 performs the functionalready described in detail of pressing the pivots of the type bar to.one side in their bearings. I

VThe auxiliary universal'bar 30 is operatively connected to theescapement mecha-` nism Vso that` rearward movement -of said bar 30 tothe proper extent operatesfor may operate the escapement" mechanism landmeanwhile the said bar 3 0 is at all times held under spring tension tomove in for#V y ward direction under the' impulse Vof the spring`forming a part ofthe escapement device. The means provided forholdingthe segment-shapedauxiliary universal bar 3.0' Yin position sothat it :may

move slightly from theV segment 19,V -but parallel thereto', Yconsistsof two. Leshaped brackets 3l having their upper ends-rigidly fastened asat 32 to opposite pointsup'on the backof the auxiliary universal barwhile the. main part or lleg ofthe bracketfextends downward toward the..back ef the` be at Vall times at 38 pivotally supported in the upperends of arms 39 extending upward from the transversely extending shaft34. It will now be obvious that vthe ytwo brackets 31 with their pivotalsupport upon four links providethe properlpa'rallel movement for theauxiliary universal bar'30.

In the full embodiment of my invention,

. as shown in Figs. land 2 particularly, one

' having its pivotal v doon rocker limits the movement ofthe spacof thetransverse shafts preferably theforward one 34,-is the rock shaftthrough thel crank arms 40 of which vby means of connecting rod 41 goingdown to the main universal rod 41a there is received the movement tooperate they escapement device. rlhis movement through crank arm 421andconnecting rod 43, is transmitted up to the escapement device wherebyeach depression of any key lever to the proper extent operates theescapement device.

The escapement' device employed and shown in the drawings is in itsconstruction and operation substantially like the escapement shown inPatent No. 1,021,182 granted to me March 26, 1912-s0 that only a brief'descriptionof said mechanism is necessary here except as'to theimprovements thereon shown vin this present application. The escapementwheel 44 having the usual teeth 45a -is mounted to revolve ina verticalplane parallel to the line of the movement of the car- Priage andoperatively connected therewith 'and with the main spring in the usualwellknown manner, not shown in the drawings. r[hetensionof the mainspring is to revolve the escapement wheel in the direction indicated.thereon in the'drawings ,by an arrow. The dogrocker 45 is provided withpivots '46v and 47 suitablyv supported in parts provided upon the frameof the rmachine but for vthe sakeV of clearness vnot shown. The axis ofthe dog rocker is at right-angles to the axisI of the escapement wheel.Pivotally mounted at48 upon the dog rocker `45 and axis at right angleswith the axis of the dog rocker is the stepping ror 'spacing dog49-which lextends upward and engages a tooth 45et of the escapementwheel 44 when the machine is not being operated which vis the positionofthe parts in Figs. 3 and 5 and which for convenience 1 will call thenormal position.V A shoulder upon the ing dog 49 to the left as shown in,'Fig. 5 where the spacing dog will hold one'of the escapement teethAinvrdesired position.` A

spring 50 upon the dog rocker 45 bears upon the spacing dog 49 so as tothrow it toward the right as viewed in Fig. 5 when the rocking movementof the rocker 45 carries the spacing dog out of engagement with theescapement wheel. A spring 51 connected at one lendY to a suitableprojection upon the rocker 45 and at theother to a convenient fixed partof the machineframe yieldingly holds therocker in such position that thespacing dog 49 is in engagement with the escape-ment wheel 44 but allowsthe rocker to be moved so that its upper part swings to the left asthe'parts are seen in Figs. 1 and 4 whereby the holding dog 52 isbrought into line with the teeth of the esca-pement wheel. The-holdingdog 52 is rigidly connected to its shaft 53 from which extends a crankarm 54 as most plainly seen in a perspective view thereof, Fig. 9. Theshaft-53 of'said holding dog is pivoted upon arms 55 and 56 uponopposite sides of the dog rocker so that the axis of said shaft is atright angles' to the axis of the dog rocker. The crank arm 54 extends tothe right as the parts are seen in Fig. 5 and is upon the opposite sideof the vaxis of the dog rocker relative to the holding dog 52 so thatdownward movement im- Aheld against its-itendnecy tomove aslong as thekey levers are held depressed. :As soon as the pressure` upon the keylevers is released the movement of the escapement wheel begins at oncesince the holding dog is forced directly back by the escapement wheelwhile the holding dog is meanwhile being moved laterally by thereturn ofthe dog rocker to normal'position so -that the spacing dog is broughtinto position to engage the next tooth of the escapement'wheel.

1t will be seen, however, that for the purpose of using the features ofmy invention involving. .the spring pressure upon the type levers neartheir pivots and a spring-tensioned auxiliary universal bar, theescapement. mechanism here shown Vand described is notessjentialsince agreat many of the estion that there is a spring-tensionedconnectvcapement devices in use are-of such construcing rod moved ateach operation of the es- -capement'device in a mannersimilar to the'connecting rod 43 here shown.

Theiescapement device here shown, however, has the further advantagethat the es- 'capement vwheel is held positively in printing position byreasonk of the direct connection ofrtheholdingdog back to the key leversresulting in la combination between the escapement device here-shownandthe features of spring pressure and auxiliary universal bar which isvery advantageous and eiiicient.

vThe escapement device shown in the prese ent application is amodification of and an improvementfuponthat lShown in my previous PatentNo. 1,021,182` in that in the vpresent device the hold-in'gdogwhenbrought toward-the normal position ofthe spacing dog' isnotbrought intol line therewith, but isa 'step'v back from the engagingfacev of the spacingl dog as plainly indicated in dottedl outline at 52ain Fig; 5. This construction results in greater speed and efficiency inthe machine in that a portion of the letter space movement of thecarriage and platen is made before Athe type reaches the platen` andwhereby less movement vof thecarriage and platen is needed tocomplete-'the escapement'movement after the type` has made itsimpression upon the platen. It will be .seen

that the first part of the movement transmitted from kthe key leverswill bring the holding dog forward to holding position vand move lthedog roc-ker and said spacing and .-holding dogs laterally whereby theholding dog is brought into engagement with the escapement wheel. Byreason of the step between the normal vposition of the spacing dog andthe holding positionof the holding dog the escapementwheelis allowed tomake a part ofits movement, butis then held temporarily from further`movement while the ltype impression is made through Ythe engagementofthe holding dog with the the impression is made.

escapement wheel, bearing in mind that the .holding dog is directly foperatively connected to thekey levers sothat as long as -the Vvkey.levers are being depressed orV heldk down the:y escapement wheel cannotmove l-While the escapement wheel is thus held in this intermediateposition the type bar complete's its movementtoward the platen andInstantaneously with the removal of pressure upon lthe key levers theescapement wheel is free lto move and does move pushing the holding dogback as the holding dog is'at thesame time .al'lowed to move back and isswung laterally n .out 'of engagement with` the escapement wheel. Itwill be seen that this con-struction resultsin great speed of themachine inthat ,alp'ortion' ofthe letter space movement of the carriageis made before the type-reaches the platen which would' Votherwisebewaste time vand thus shortens up-the time-,necessaryafter' a typeimpression has beenlmade for'the completion of the escapement `move- Yment because only a part of the complete movement remains `still 'to bekmade; The arrangement and'adjustment ofpartsis such that .the type underits highest velocity'will v-ately skilled operators.

the lmachine even Iwhen usedlby unskilledoperators. Y f

It will be seen also that the escapement device here showin combining asit does the step .between the spacingv and 4theyholding dog and theholdingvdog positively held by the vkey lever combines very efficientlythe feature of desirable highspeed and also the equally importa-ntfactor of a definite type impression in. that the lplaten is positivelyvheld aslong as pressure on the key lever continues so that no .movementVof the platen is allowed during the time when the'type is in .contactwith the platen' thus avoiding blurred or double impressions.

With these features my machine also com! bines the auxiliary universalbar Voperated directly bythe type bars whereby the escapement device andtype impression vmay be much more efficiently andA positively connected.r.In practice preferably the parts as shown in the drawing willA be soarranged that while the main movementof the escapement deviceisgstarted/-and' carried on` through the main universal.bar the lastpart of the escapement .movement will be brought about by vthe auxiliaryuniversal bar .being actuatedby the type-bars so as tofovertakethe-other movement and sorcomplete the escapement movement'at theinstant the type impression has been made` .But itwill be obvious fromthe construction already Ydescribed and shown in the drawin `s thatthesocalledmain universal bar may eentirely eliminated as far as spacingwhen type im-Y pressions 'are' made and lthat the necessary.

operation of the escapement device at such times may be performedthroug'hgthe socalled auxiliary.'universal'bar being operi ated by thetype vbars moving the pins 23.

It will be seen also that the `provision l make for the type bars beingheldto one` side of their bearings by spring pressure upon the ltypebars as theyfapproach printing.

. position allows me to makealooser-jointed machine .than wouldotherwise be practical and'so a machine `inoreeasily operated andconsequently capable of greater' speed. `'Furthermore the `provision forthe yslight spring tension against the type bars 'will also operate tohasten Vtheir movement awav from the; platen after the type has madeitsimpression thus assisting in'greater speed .of

the machine and will also prevent any rebounding of the type bars thuseffecting better and clearer type impressions.

What I claim as new and desire to secure by Letters Patent is:

1. In a typewriting machine lthe combination of a type bar hanger havingoppositely disposed bearings, a type bar having two oppositely disposedlaterally extending pivots supported in the .hanger bearings, the sideof the bearings towardwhieh the type bar pivots are pressed beingcrotch-shaped, and a spring-tensioned member adapted to come intoengagement with said type bar near its pivotal support as the type barapproaches printing position whereby the type bar pivots are pressedagainst said crotch-shaped sidel of their bearings insuring uniformityof position of the type bar at printing.

2. A typewriting machine having a spring tensioned universal bar, anescapement device operated therefrom, a type bar hanger support, twospaced series of type bar harig-V ers on said support, type barspivotally mounted in said supports and guided solely thereby and meansfor operatively connecting the type bars to the universal bar wherebythe type bars operate the universal bar and the type bars are pressed toone side of their pivoted bearings by the tension from the universalbar, one series of said connecting means being arranged between the twoseries of hangers.

3. A typewriting machine having a spring tensioned universal bar, anescapement device operated therefrom, a type bar hanger support, twospaced series of type bar hangers on said support, type bars pivotallymounted in said supports and'guided solely thereby and pins slidinglymounted in the hanger support and adapted to operatively connect thetype bars and the universal bar whereby the type bars are pressed to oneside of their pivotal bearings by the tension from the universal bar,one series of said pins being arranged between the two series ofhangers.

In witness whereof I have aiXed my signature, this 8th day of February,1917.

Louis P. Diss.

